Medical mask



FIG. 1 is a perspective view of a medical mask;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view thereof as worn.

The broken lines illustrate stitching on the medical mask and do form part of the claimed design.

The dash-dot lines in FIG. 8 represent a person wearing the medical mask and form no part of the claimed design. 

CLAIM The ornamental design for a medical mask, substantially as shown and described. 